Improvement in time-locks



*J. B. OVERMYER.

Time-Lock.

No. 214,438. Patented April 15, 1879.

INVENTOR flkwy ATTORNEYS.

WITNESSES f N- PETERS, PHOTO-LIYHOGRAFNER, WASHINGTONv D C,

UNITED STATES PATENT OFFICE.

JOHN B. OVERMYER, OF NEW LEXINGTON, OHIO.

IMPROVEMENT IN TIME-LOCKS.

Specification forming part of Letters Patent No. 214,438, dated April 15, 1879; application filed January 19,1878.

- To all whom it may concern:

State of Ohio, have invented a new and Improved Time-Lock, of which the followingis a specification.

This invention is intended to improve the time-lock for which Letters Patent have been granted to John B. Overmyer and James A. Huston, under date of July 24, 1.877, and numbered 193,544, in such a manner that in case the watch-movements which control the main bolt should stop, the lock may still be opened from the outside in a certain fixed time, by the use of the spindle of any ordinary combination-lock, without necessitating the forcible opening of the safe and causing other inconveniences.

The invention consists in the combination, with the releasing mechanism of the time-lock, of a suitable ratchet-and-pawl arrangement that is operated by supplemental tumblers on the spindle of an ordinary combination-lock, the spindle being prevented by the time-lock from turning in the direction for opening the combination-lock until the time-lock releases the same.

In the accompanying drawings, Figure 1 represents a rear elevation of my improved time-lock; Fig. 2, a vertical transverse section on line y y, Fig. 1; and Fig. 3, a horizontal section of the same on line 2 2, Fig. 1.

Similar letters of reference indicate corresponding parts.

A represents a safe-door, having a casing or frame, A containing at the upperv part any approved time-lock, and below the same an ordinary combination-lock, that is Worked by the spindle A as soon as the fulcrumed and spring-acted lever-stop B is raised out of the way of the bolt by the time-lock. The spindle A is extended back of the casing A, and provided between the same and the inside wall of safe-door with three supplemental tumblers, C, O, and C of which the largest tumbler, (1, next to the case A, reaches up to the leverstop B of the time-lock, so as to lift the stop when turned in one direction, but be prevented from turning in the opposite direction by the dropping of the lever-stop into a rectangular notch, a, at the circumference of tumbler C.

The two remaining tumblers, O and G are of smaller size than the first tumbler, O, and the intermediate tumbler, '0 smaller than the rearmost tumbler, O The large tumbler, O, is keyed to the spindle, and the adjoining tumbler, 0 attached to the first tumbler, while the third tumbler, C is loose on the spindle, and worked by projecting pins 1) from the intermediate tumbler, in the usual manner in tumbler-locks. The smaller tumblers, O and C are each provided with a sector-shaped notch, d, into which the correspondinglyshaped end at of a pivot-dog, D, fits. Dog D is connected by a pivot-pawl, D, with a ratchet-wheel, E, on the rear end of the arbor of which is apinion, f, which operates through the medium of an intermediate gear-wheel to revolve the wheel H, by which the arm j is made to raise the leverstop B out of the notch a of tumbler O. This particular device or form of lock for releasing the lever.- stop B forms no part of my invention, but is given simply as one of many ways in which said release may be effected, so as to allow the permutation-lock to be operated to open the safe-door.

The supplemental tumblers on the outside of the case of the combination-lock are only to be used when the time-lock fails to release the lever-stop, and, consequently, the-spindle, at the appointed time. The notched supplemental tumbler C and lever-stop B prevent the turning of the spindle in the direction necessary to open the permutation-lock until the time-lock raises the stop out of the way. The spindle and supplemental tumblers may, however, be turned in opposite directions for working the pawl-and-ratchet connection with the time-lock. To do this the spindle is turned until the head of the dog D drops into the notch of tumbler C The spindle is then reversed until the dog also drops into the notch of tumbler (1 The spindle is then again reversed, and thereby the ratchet turned by the connecting-pawl for one tooth. This operation is repeated until the releasing-army is worked down far enough to raise the lever-stop, and admit the throwing of the bolt and working of the permutation-lock.

The supplemental tumblers are set to a suitable combination in the same manner as the egular tumblers, the ratchet being continually worked by the same until the distance untraveled by the releasingarm j, on account of the failure of the watchmovement, is made up by the supplemental tumblers and ratchetconnection, and thereby the sal'eopened with out forcing the door and causingannoyingdetentions and other inconveniences.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of the spindle A of a permutation-lock, the notched supplemental tumbler U inserted thereon, and the leverstop B of a time-lock, adapted to drop into said notch, the arrangement being such that the spindle is allowed to turn freely in one direction, but not far enough to operate the permutation-l0ck, until the stoplever ot' the time-lock is raised out of the notch 01' the supplemental tumbler, as described and set forth.

2. The combination of the spindle of a perlllllifiiloll'lflt'k, having supplemental tumblers outside oi lock and ot' difi'erent size, the lever I), having an :H|; 1'Ill;llt'||tl,1l. and a pawl, l)

to operate the ratchet E, and the releasing mechanism of a time lock, substantially as and for the purpose set forth.

.1. The combination of the spindle of a permutationloek, having notched supplemental tumblers, of which one is locked in one direction by the lever-stop of the tinie-l0ck,with a pawl-and-ratchet mechanism that operates the releasing mechanism of the time-lock, so as to admit the opening of both locks in case of failure of watch-movements, substantially as specitied.

4. The spindle of the permutati0n-l0ck,having notched supplemental tumblers, one of which is prevented from turning in the direction for opening the permutation-lock by the lever-stop ot' the time-lock, while the others engage api rot-dog of a pawl-and-ratchet mechanism that works the releasing mechanism of the time-lock substantially as shown and described.

JOIIN B. OVERMYER. \Vitnesses:

\t'iLLl m1 M ELOY, I). .\I. \YmsMAN. 

